dinickel boride

{{about|the crystalline compound|the catalyst improperly called "nickel boride" or "Ni₂B"|nickel boride catalyst}}

{{Chembox

| verifiedrevid =

| Name = Dinickel boride

| ImageFile = Ni2B.png

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|Section1={{Chembox Identifiers

| ChemSpiderID_Ref =

| ChemSpiderID = 21170791

| EINECS = 234-494-6

| PubChem = 6336854

| StdInChI = 1S/B.2Ni

| StdInChIKey = WRLJWIVBUPYRTE-UHFFFAOYSA-N

| SMILES = [B].[Ni].[Ni]

| CASNo_Ref = US National Institutes of Health (2020): "[https://pubchem.ncbi.nlm.nih.gov/compound/6336854 Nickel boride (Ni2B)]". Compound page at the NCBI PubChem site. Accessed on 2020-07-18.

| CASNo = 12007-01-1

| RTECS =

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|Section2={{Chembox Properties

| Formula = Ni₂B | Ni=2 | B=1

| MolarMass = 128.2 g/mol

| Appearance =

| Density =

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| BoilingPt =

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|Section3={{Chembox Structure

| Coordination =

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|Section7={{Chembox Hazards

| ExternalSDS =

| GHSPictograms = {{GHS07}}{{GHS08}}{{GHS09}}

| GHSSignalWord = Danger

| HPhrases = {{H-phrases|317|350i|372|410|}}

| PPhrases = {{P-phrases|}}

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Dinickel boride is a chemical compound of nickel and boron with formula {{chem|Ni|2|B}}.{{cite journal |first=T. |last=Bjurstrom |journal=Arkiv för kemi, mineralogi och geologi |title=Röntgenanalyse der Systeme Eisen-Bor, Kobalt-Bor und Nickel-Bor |trans-title=X-ray analysis of the iron-boron, cobalt-boron, and nickel-boron systems |volume=11A |issue=5 |date=March 1933}} It is one of the borides of nickel.

The formula "{{chem|Ni|2|B}}" and the name "nickel boride" are often used for a nickel-boron catalyst obtained by reacting nickel salts with sodium borohydride. However, that product is not a well-defined compound, and its bulk formula is closer to {{chem|Na|2.5|B}}(sic).{{Cite journal |last1=Hofer |first1=L. J. E. |last2=Shultz |first2=J. F. |last3=Panson |first3=R. D. |last4=Anderson |first4=R. B. |date=December 1964 |title=The Nature of the Nickel Boride Formed by the Action of Sodium Borohydride on Nickel Salts |url=https://pubs.acs.org/doi/abs/10.1021/ic50022a031 |journal=Inorganic Chemistry |language=en |volume=3 |issue=12 |pages=1783–1785 |doi=10.1021/ic50022a031 |issn=0020-1669}}